Calorie (IT) to Millijoule Converter

Energy Converter

27 units available

Decimals:

From

To

4,186.8

1 cal (IT) = 4,186.8 mJ

Formula:

mJ = cal (IT) × 4,186.8

With your value: 1 cal (IT) = 4,186.8 mJ

How big is that?

Everyday references on a logarithmic scale, all expressed in calorie (it) so you can sanity-check the result.

Heartbeat (1/4.2 your value)0.239 cal (IT)

Your value1.00 cal (IT)

AA battery charge (2.4e+3× your value)2.39e+3 cal (IT)

Slice of bread (6.7e+4× your value)6.69e+4 cal (IT)

Daily food intake (2.0e+6× your value)2.01e+6 cal (IT)

Litre of petrol (8.2e+6× your value)8.17e+6 cal (IT)

Other Calorie (IT) to Millijoule conversions

2 cal (IT) to mJ 3 cal (IT) to mJ 4 cal (IT) to mJ 5 cal (IT) to mJ 6 cal (IT) to mJ 7 cal (IT) to mJ 8 cal (IT) to mJ

Calorie (IT) to Millijoule Conversion Table

Calorie (IT) (cal (IT))	Millijoule (mJ)
0.5	2,093.4
1	4,186.8
2	8,373.6
5	20,934
10	41,868
15	62,802
20	83,736
25	104,670
50	209,340
100	418,680
250	1,046,700
500	2,093,400
1000	4,186,800

Millijoule to Calorie (IT) Conversion Table

Millijoule (mJ)	Calorie (IT) (cal (IT))
0.5	0.000119
1	0.000239
2	0.000478
5	0.001194
10	0.002388
15	0.003583
20	0.004777
25	0.005971
50	0.011942
100	0.023885
250	0.059711
500	0.119423
1000	0.238846

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Calorie (IT) (cal (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Millijoule (mJ)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Calorie (IT) to Millijoule

To convert from Calorie (IT) (cal (IT)) to Millijoule (mJ), multiply the value by 4,186.8.

Formula: mJ = cal (IT) × 4,186.8

Reverse: cal (IT) = mJ × 0.0002388459

Step-by-Step Example

Start with your value in Calorie (IT). For example: 5 cal (IT)
Multiply by the conversion factor: 5 x 4,186.8
The result is: 20,934 mJ

About Calorie (IT)

The calorie (it) (cal (IT)) is a unit of energy and work. One calorie (it) equals 4.1868 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Millijoule

The millijoule (mJ) is a unit of energy and work. One millijoule equals 0.001 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Millijoule are in 1 Calorie (IT)?

There are exactly 4,186.8 Millijoule in 1 Calorie (IT). This means the conversion factor from Calorie (IT) to Millijoule is 4,186.8.

What is the formula to convert Calorie (IT) to Millijoule?

The formula to convert Calorie (IT) to Millijoule is: mJ = cal (IT) × 4,186.8. For example, to convert 10 Calorie (IT) to Millijoule, you would multiply 10 by 4,186.8.

What is a Calorie (IT)?